Combined typewriting and computing machine



B. C.'STICKNEY.

COMBINED TYPEwmTlNG AND coMPuTlNG MACHINE.

APPLICATION FILED DEC. l0. 1917.v 1,356,177. Patented Oct. 19, 1920.

6 SHEE i S--SHLET l.

B. C. STICKNEY.

COMBINED TYPEwIIITINC AND COMPUTING MACHINE.

APPLICATION FILED DEC. I0, ISI?. 1,356,177. Patented Oct. 19, 1920.

6 SHEEIS-SHL'ET 2.

www www Y N T .UU

B. C.,ST|CKNEY.

. COMBINED TYPEwRITING AND COMPUTING MACHINE.

. APPLICATION FILED DEC. 10. 19|?. 1,356,177.

Ptllfbd OG 19, 1920.

6 SHEETS-SHEET s.

.E im m V M B. C. STICKNEY.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED DEC. I0, I9I7.

Patented oon 19,1920.

6 SHEETS-SHEET 4.

I l I L .J'

//7 Vemor.' @MMM Patented Oct. 19, 1920.

6 SHEETS-SHEET 5.

APPLICATION `FILED DEC. l0 19|?.

Minesqs: l A 4 /fzvenfo/t" i ya ,''p l B. C. STICKNEY.

COMBINED TYPEwRmNG AND COMPUTING MACHINE.

APPLICATION YILED DEC. l0. i917.

Patented Oct. 19, 1920.

NM z 4 z z z z z z z z w m m w m w w w w. z EN z z z z z www zz,wmw, zzzwwm .SN

{M/fesses mm UNITED STATES Specification of Letters Patent.

PATENT OFFICE.

JERSEY, ASSIGNOR TO UNDERWOOD NEW YORK, N. Y., A CORPORATION 0F NEW COMBINED `TYPIERITING' AND COMPUTING MACHINE Patented Oct. 19, 1920.

Application filed December 10, 1917. Serial No. 206,406.

To all whom t may concern.'

Be it known that I, BURNHAM C. STICK- NEY, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Combined Typewriting and (/omputing Machines, of which the following is a specification.

This invention relates to improvements in computing machines, and is illustrated as applied to a combined typewriting and computing machine of the type disclosed in Patent No. 1,237 ,008, issued to Wright & Degener on August 14, 1917, although it is to be understood that the invention is in no manner limited in its application to machines of that particular design. v

Machines of the type disclosed in the above-mentioned patent comprise, in general, computing mechanism including computing wheels and a master wheel, relatively movable with respect thereto, in accordance with the letter-spacing movement of the typewriter carriage. By such relative movement, the master wheel is" brought into co-.

operative relation with the various computing wheels in succession, so that numbers printed on the typewriter may be accumulated thereby; means being provided as a result of which the mastery wheel is rotated at each operation of a numeral key to an extent corresponding to the digit represented by said key.

u The particular embodiment of the inven-A tion, herein disclosed, involves computing mechanism including three computing heads, each of which is settable to threeditl'erent states,that is, to add, to subtract, or to remain neutral. Alocking device is provided for the numeral keys, said device being controlled by operating mechanism adapted to render the same effective to'lock said keys whenever the typewriter carriage entersa computing zone. A mechanism for indicating to the operative, invaccordance with various permutations, which may be selectively predetermined,'the different states to which the computing heads may be set for each computing zone, is also controlled byy the letter-spacing movement of the carriage, so as to berendered effective whenever the carriage enters one of said zones.- A statesetting ,device is provided, by means of which the various computing heads may be heads, each settable to set in accordance with the states registered by the indicating mechanism, and a releasing device for the key-locking device is so controlled in its operation, by both the stateindicating device and the state-setting device, that the numeral keys, having been once locked by the travel of the carriage into a particular computing zone, may not be unlocked without first setting the computing heads in accordance with the predetermined permutation of states as registered by the indicating device. Means is also provided for disconnecting the numeralr keys from the computing mechanism, and for rendering the key-locking device ineffective when said keys are disconnected thereby.

The mechanism may include means, controlled by the travel of the carriage into any one of a number of predetermined computing zones, for indicating to an operative a particular permutation of states whichV may be selectively predetermined, and in accordance with which it is desired to have a number of computing heads set for said zone.

f The mechanism may also include means, controlled by the travel of the carriage into any one of a number of predetermined computing zones, for locking the numeral keys, and, at the same time, indicating to an operative a particular permutation of states, which may be selectively predetermined, and in accordance with which a number of computing heads must be set before said keys may be unlocked.

The mechanism is herein illustrated as in- Acluding a permutation state-setting device for selectively setting three computing three different states, in accordance with all the possible permutations of the states represented.

vIt may also include key-locking means, state-indicating means, and. state-setting means, forv the above-mentioned purposes, combined with lock-releasing means controlled in itsv operation by the relative positions of parts of said state-setting and stateindicating means.

i The invention may be embodied in a machine, having means for disconnecting the numeral keys from the computing mechanisrn, with means for lockingsaid keyswhen the carriage enters a computing zone, said locking .means being rendered ineffective when said key-disconnecting means is operated to disconnect said keys.

' Other features and advantages will hereinafter appear.

ln the accompanying drawings, Figure 1 is a side view of a combined typewriting and computing machine, wlth the inventionapplied thereto, certain parts beingvomitted ig. 2 is a front view of parts of the same machine. I

Fig. 3 is a front view of the state-indicator, parts being omitted.

Fig. 4 is a sectional view of the stateindicator, shown in Fig. 2, the controllerhandle for the state-.setting device and for the lock-releasing device also being shown.

Fig. 5 is a diagram in perspective of certain parts of the invention and their relative positions with respect to the typewriter frame, the latter being indicated in broken lines.

Fig. 6 is a fragmentary view of lparts of the mechanism for causing themas'ter wheel to travel concomitantlyl with the ,carriage throughout predetermined zones.

Fig. 7 is a fragmentary, sectional, side view, parts of the machine being shown in broken lines and parts being omitted.

Fig. 8 is a diagrammatic view of parts of the state-indicator; showing also the lockout elements for the lock-releasing device, and the indicator-scale and index /for determining the position of the state-setting device.

Fig. 9 is a front view, drawn to a larger scale, of parts of the operating mechanism for the state-indicator and key-locking devices.

Fig. 10 is a diagrammatic view of a tabulator column-stop, indicating, in broken lines, various relative positions in which operating surfaces or tappets may be added thereto vto form an index` for predeterminingeferring to the various figures of the drawings, in which like vreference characters designate like parts, the invention is disclosed as applied to a typewriter (Fig. 1) having keys including numeral keys 20 by which levers 21 may be depressed to rock bell-cranks 22 to swing type-bars 23 and maar?? cause their type to strike rearwardly against the front side of a platen 24. Said platen 1s mounted on a carriage 25 running on tracks, one of which is designated 26, said carriage being spring-urged in. one direction b y a spring and spring-barrel 27. Said carriage has a rack 28 meshing witha pinion 29, connected by the usual one-way pawls (not shown) to an escapement wheel 30, controlled by escapement dogs 31. Said escapement dogs are reciprocated by a universal bar 32, which is engaged and' moved at each operation of a type-key, the type-bar of each key being provided with a heel 33,for such purpose. The rack 28 is hung on arms 34, pivotally connected to the carriage 25, so that it may be lifted from the pinion 29 to release the carriage.Z

l Tabulator keys 35- are provided, said keys being mounted upon levers 36, which, at their rear ends, engage stop-rods 37 having decimal stops y38 at their upper ends. Said decimal stops 38 coperate with adjustable column-stops 39, said column-stops being inserted, as required, in notches 40, 41, formed, respectively, in the top and bottom of a bar 42, earriedby the carriage 25. Each decimal stop-rod is provided with means' (not shown) for lifting the rack-bar 28 from the escapement pinion 29 whenever a tabulator key 35 is depressed.

The typewriter and tabulator mechanisms, thus far briefly described, are in common use inthe Underwood typewriter as sold to and used by the trade, and need n-ot, therefore, be herein set forth with greater particularity. v i v ln amachine of the type in connection closed, it is necessary to provide means for producing relative step-by-step motion between themaster .wheel and theicomputing wheels, in accordance-with the letter-spacing movement of the` typewriter carriage. lin this instance, the master wheel has been selected as the traveling element.,` The machine is provided with three computing heads, designated, respectively, '59, 60 and 61, (Fig. 2), each of which is provided with a master wheel 62 (Fig. 14). The means for causing the master wheels to move in accordance with the letter-spacing movement of the carriage'may be controlled by tappets which may be adjustably attached to a notched bar carried by the carriage. As herein disclosed, the bar used ,for this purpose is the same bar 42 which has been described `as a part of the tabulator mechanism, and the tappets are mere extensions of the tabulator column-stops 39, (Fig. 1). Each of the tappets 63, of which there may be one or more, is brought into engagement, vduring the travel of the carriage lin letter-spacing direction, with a sprlng-pressed latch 64, (Fig. 6), connected to one end of a lever 65, (Fig. 1),'which is pivotally mounted intermediate its ends on the machine frame, at 66. The opposite end of the lever 65 may be divided into three branches, 67, 68 and 69, Fig.. 1), leach of which may be connected, through a suitable pin-and-slot connection, with one of the slidably-mounted sleeves 73, 74 and 75, (Fig. 2) for reciprocating the master wheels of the computing heads 59, 60 and 61, respectively. By suitably placing the tappets 63 with respect to the bar 42, the relative positions of thecomputing zones, with respect to a work-piece carried by the typewriter platen, may be predetermined, since the point in the movement of the carriage, at which the master wheel will commence its movement therewith, will be determined by the engagement of one of said tappets with the latch 64.

To permit the lever 65 to return the master wheels to their normal positions, after they have advanced through a computing Zone to their engaging relation with respect to the computing Wheels of lowest denomination of their respective computing heads, the latch 64-is provided with a cam surface 70 to engage a pin 71, fixed with respect to the machine frame, for releasing the latch from the tappets 68, said lever 65 bein provided with a spring 72 to return and old the samein normal position. The above-described means for causing the master wheel to movel concomitantly with the typewriter carriage in letter-spacing direction is not, per se, an invention of this applicant, the same being disclosed and claimed in a Patent No. 1,244,398, granted to Walter l/Vright, on October 23, 1917. This part of the mechanism, being fully illustrated and described in said patent, need not be set forth with greater particularity in this case.

The computing veads and' carry-over mechanism, herein disclosed, are of th type illustrated and described in the British patent to )Valter \Vright, No. 87 40 of 1909, and need, therefore, be but briefly described here. Inasmuch asthe three computing heads 59, 60 and 61 are identical in construction and operation, it will be neceesary to describe but one. Eachcomputing head (see Fig. 14) includes a master wheel 62 mounted on a master-wheel shaft 80, so as to rotate therewith and yet be capable of sliding longitudinally, so as to bring the teeth thereon successively into engaging relation with interna] gears 81, consisting of inwardly-projecting teeth on a series of computing wheels 82,` located along the shaft 80 and concentric therewith. The computing wheels 82 are also provided with external teeth, forming gears 83, which mesh withcorresponding gears 84, carrying number-bearing dials or wheels 85, which are adapted to exhibit the numbers thereon as they are turned toregister with the aperture 86 in the computinghead casing 87. Each of the three masterwheel shafts 80 is provided at its outer eX- tremity with a beveled gear 88, 89, 90, (Fig. 2), from whence it receives its motion. Each of said beveled gears receives its motion from one or the other of a pair of beveled gears, there being three such pairs, comprising the six gears 91 to 96, inclusive, (Fig. 2). These six gears are loosely mounted upon a shaft 97, to which they are adapted to beconnected by two-faced clutches 98, 99 and 100, there being one such clutch for each pair of gears. Each of said clutches is splined to the shaft 97, so as to rotate therewith, but to have a sliding movement, in order that it may be brought into engagement with either gear of the pair with which it is associated. Each clutch may also be moved to an intermediate position in which it will be free from engagement with either of its associated gears. The means for driving the shaft 97 and for controlling the operation of the clutches 98 to 100, inclusive, will hereinafter be described.

In order that each of the computing wheels 82, when moved from 9 to 0, or from 0 to 9, may advance the computing wheel of next higherorder one step in the same direction, each of said computing wheels is provided-with a single carrying tooth 101, which is adapted, at each move- -ment of said computing wheel between vits 9 and 0 positions, to engage with one of five equally-spaced teeth on the transferwheel 102, to impart to said wheel an' initial carry-over movement. Carried by said transfer-wheel is a series of five equallyspaced projections 103, separated by arcshaped depressions, and a gear (not shown) which meshes with a gear of the computing wheel of next higher order. Mounted to rotate aboutan axis parallel with the axis of said transfer-wheels 102, is a shaft 104, carrying a cylinder 105 of elastic material, such as rubber, the surface of said cylinder normally lying along a series of said arcshaped depressions in the transfer-wheels, so as to be normally out of contact with the projections 103. At each computing operation, the cylinder 105.is caused to rotate, by 115 means which will hereinafterbe described, and to coperate with said transfer-wheelsl to complete any carry-over operations initiated by the carry-over teeth 101 in the folloWin man-ner. On the initial rotation of a trans er-wheel 102 by one ofsaid teeth 101, one ofthe projections 103 of said transferwheel is caused to crush into the cylinder 105, the rotation of which is then communicated to the transfer-wheel and thence, by the gear which it carries, to the computing wheel of next higher order, to impart thereto `one full step. A roller-detent 106 lmay be provided fo'r preventing overthrow and for holding the transfer-wheel in such position 130 manner, the shaft carryin said cylinder is provided with a gear 107 Figs. 13 and 14), v

which meshes With a gear 108, carried by a shaft having 'fast thereon a gear 109, meshing with a gear 110 on the shaft 111. Each i of the three carry-over driving shafts 111 is provided With a beveled gear, said gears being desi nated 112, 113 and 114, (see Fig. 1). Fac of said beveled gears is driven, at each computing operation, by one or the otherl offa pair of beveled gears, therebeing three such pairs, comprising six gears, designated by thefreference characters 115 to 120, inclusive. The last-mentioned gears are loosely mounted on a shaft 121, from Which they are driven by means of two-faced clutches 122, 123, 124, there being one'such clutch for each pair of gears. Each of said clutches 122, 123 and 124 is splined to the shaft 121, so as to rotate therewith, but has a sliding movement to provide for bringing it into a driving relation With one or the other of its associated pair of gears, or in a position free from both, in amanner similar to the driving connections between the clutches 98 to 100` and the beveled gears 91 to 96, inclusive.

rIhe shafts 97 and 121 (Fig. 1) may be driven from a constantly-rotating motor 130, connected by means of a friction coupling (not shown), with a beveled gear 131 meshing With a beveled gear 132 on a shaft 133. The shaft 133 is connected to drive a shaft 162 through the intermediary of the three beveled gears 134, 135 and 161. The shaft 97 is driven from the shaft 162 through the intermediary of the beveled gears 163v and '164. Connected to the. shaft 133 is a beveled gear 165, meshing With a beveled gear 166 on a shaft 167, from which the shaft 121 is driven through the intermediary of intermeshing beveled gears 168 and 169.

Although the shaft 133 has a constant tendency to rotate as a result of its connection through the aforesaid friction coupling with the constantly-rotating motor 130, said shaft and the parts driven thereby are permitted to rotate only as a result of the opl'fliebeveledv gear 135.1(Fig. 1), which recare/r meshes with the beveled gears 134 and 161, is mounted on a shaft `136, having fast thereon a gear 137 (Fig. 12), meshing vvith a gear 138 fast on a shaft 139, on which 1s mounted a valuating orindexing Wheel 140. Said valuating Wheel 140 is provided With a seriesof index pins 141, slidably mounted thereinand having a lengthsomewhat greater than the Width of said valuating Wheel. Rotation of the valuating Wheel is normally prevented by engagement of one of said pins With an escapement Wheel y142, carried at one end of a shaft 143, having at the other end thereof a secondary escapement Wheel 144, movement of Which is normally prevented by engagement of one arm thereof With one of a pair of dogs 145, 146, carried by a rock-shaft 147 The pins 141 in the valuating Wheel v140, With the exception of the one which engages the escapement Wheel 142, are normally positioned so that one end of each pin is flush with the face of the valuating member adjacent said escapement Wheel, the other ends of said pins projecting from the opposite surface of the valuating Wheel.

Each of the numeral keys 20 (Fig. 12) is connected, by means of a link 148, having a hooked end 149 engaging with an opening 150 in the key-lever 21, to one arm of a bell-crank 151, the other arm of which is connected, by means of a link 152, with one arm of a lever 153, carrying at its outer end a jack 154, properly positioned'when moved by said lever 153 to engage and move one of the. pin's 141 in the valuating Wheel 140. Each of the links 152 passes through a slot 180'in a' disk 181 mounted on a sliding bar 155 provided With a spring 156 for holding the same in its normal position and returning it thereto after each operation. Carried by the bar 155, at a'slight distance in yadvance of the disk 181, is a head 157, `providing a recess, Within which rests one end of a lever 158, connected at its other end with a link 159, which, in turn, is connected with an arm 160 `for rocking the shaft 147.

lBy means of the above-described mechanism, the depression of a numeral key 20 will rock its bell-crank 151, and, through its connection with the lever 153, project one of the jacks 154 to cause anendwise displacement of a pin 141, placed at an angular distance from the pin which is in engagement With the escapement Wheel 142, 'corresponding to the digit represented by the particular numeral key depressed. The same operation of the key `Will, through'engagement of the head 157, with the lever 158, rock the shaft 147, thus causing the dogv145 to move out of engagement vWith the arm of the auxiliary escapement Wheel 144, and permit the same to move into engagement With'the dog 146. This slight movement of the aurillease the valuating Wheel from its engagement With the escapement Wheel 142. At the beginning of the upward movement of the numeral key, when released, the lever 158, through its engagement With the disk 181, which will. be returned by the spring 156, will be rocked in the opposite direction, and, through its connection With the arm 100, will return the shaft 147 to its normal position, thus releasing the auxiliary escapement Wheel 144 from the dog 146, and permitting a sufficient rotation of the escapement yvheel 142, to release the valuating Wheel 140 and permit it to rotate until the pin 141, which was displaced by the jack 154, engages a tooth of the escapement Wheel 142. 140, through tions With the shafts 97 and 121, Will cause a rotation ot the master Wheel of the computing mechanism proportional to the digit represented by the operated numeral key. During the rotation of the valuating Wheel 140, which results from the depression or f' any or the nine numeral keys, the pin 141 'which was displaced yas a result oi the last numeral 1rey previously-depressed, and thus brought into engagement with the escapement Wheel 142, is returned to its normal position, means, not shown, being provided for such purpose.

The clutches 98 to 100, inclusive, heretolore-described, are provided as a means tor reversing the direction or' rotation ot the totalizer mechanisms, in order that the same may be used in computations involving either addition or subtraction. y As already explained, these clutches may also be moved to an intermediate position, in Which they Will be free from engagement with either of the beveled gears with Which they are associated, in which case the shaft 97 may rotate Without imparting any movement to the totalizeri-Wheels. The corresponding clutches 122 to 124, inclusive, are provided for the purpose of reversing the direction of rotation of the tens-carrying mechanisms simultaneously With that of the totalizer Wheels. Each of these clutches may also be moved to an intermediate position, in Which case the mechanism controlled thereby will be permitted to remain neutral. To control the operation of these clutches, there are provided composite levers 170, 171 and 172 (Fig. 1), one for each of the computing heads. As theselevers are identical in their construction and operation, it Will be necessary to describe but one. These composite levers, together With the clutches which they control constitute state-shifting mechanisms,

individual to said computing heads, for setting said heads to add, to subtract, or to .remain neutral. y

In the form shown, each Yof the composite levers 170,l 171, and 172, comprises a mam This rotation ot the valuating Wheel theabove-described conneclever 173 (Fig. 1), 'pivoted intermediate its ends at 174, and a supplementary lever 175, pivoted to the main lever at 176. The supplementary lever 175 has a limited movement relative to the main lever, Which may be taken up by a spring 177. The main and supplementary levers, in the caseof each composite lever, are provided, respectively, with pins 178 and 17 9, which engage grooves in the associated master-Wheel and tens-carrying clutches,- respectively, so that they may be simultaneously shifted to the proper relative positions corresponding with the different states to which the, computing heads may be set.

` For the purpose of simultaneously moving said state-shifting levers 170 to 172 to dilerent relative positions, to set the computing heads 59 to 01, in accordance with various permutations of the diiferent states to'which they are adapted to be set, there is provided a permutation-state-setting device, comprising three Ycam disks 200, 201, 202 (Figs. 1 and 2), one tor each computing head, said disks being iiXedly attached to a common shaft 203, mounted in brackets 204, 205, supported from the machine frame. Said cani disks 200, 201, 202 may be secured to said shaft in any suitable manner, as by set-screws 227, providing convenient means of adjustment, each with respect to the. others: Each of said cam disks is provided with a pair of cam surfaces, forming guiding grooves 206, 207, 208, Which engage, respectively, pins 209, 210, 211, carried bv said state-shifting levers.

As a means of imparting rotation to the above-described state-setting device, there is provided a controller-handle or fingerypiece 212, connected by means of gearing, which will now be described, With the shaft 203. Mounted upon a'bracket 182, (Fig. 4), 'forming a continuation of the bracket 205, is a face-plate or dial 213. A driving sector 214, liXedly attached to a hub 215 (Fig. 7), one end of which is mounted to rotate in the bracket 205, and the other end in the faceplate 213, is provided .with teeth. engaging With teeth of a gear-Wheel 216, fast upon a shaft, mounted in saidbracket 205, and

having Xedly attached, so as to rotate therewith, a beveled gear 217, meshing With a beveled gear 218, fa'stupon the shaft 203.

Secured to the hub 215 (Fig. 2), is a radial arm 219, having a pointer or index 220, which moves in an arcuate path over the face of the dial-plate 213. The controller-handle 212 may be in the form of a lever, pivoted to the arm 219 at 221, the inner end of which is pivotally connected with a bar 222 (Figs. 4 and 5), sliding-ly mounted Within the hollow hub'215. It will thus be seen that the controller-handle 212 serves as means for imparting rotary movement 'to the sector 2714. an'd'thence to the cam disks of the state-setting device, and, by a movement iny a direction toward and away trom the dial, serves as means for reciprocating the bar 222, for a purpose which willhereinafter be set forth.

The face oit the dial-plate 213 is provided with an indicator-scale 223, having elements placed in the arc of a circle of a radius somewhat greater than the length of the index 220, so that on rotation of the state-setting device by the controller-handle 212, said index may be brought into registry with any one of the elements of said scale. rFhe scale 223 comprises three arcuate ro'ws of symbols (see diagram, Fig. 8), made up ot the letters representing, respectively, the three states to which each of the computing heads is settable, that is, for substraction, for addition, or to remain neutral. 'llhe outermost row of symbols, as arranged on the scale, represents states to which the upper computing head 59 is to be set; the innermost row represents states to which the lower computing head 61 is to be set; and the intermediate row represents states to which the middle computing head 60 is to be set. These symbols may be, as shown by the diagram (Fig. 8), so varied in theirarrangement that each group of three in a radial direction represents a different permutation of the relative states to which the three computing heads may be set, the

twenty-seven such groups indicated representing all of the possible permutations for three heads and three states. l

1n Fig. 11 is shown three diagrams, one Jfor each of the cam disks which control the movement of the state-shifting levers. Eachof these diagrams represents the development of the. guiding groove on its periphery, as viewed from the center of the disk. The points along the diagrams designated by the syn'ibols'or letters S, N and A represent the relative positions of the pins 209, 210, 211, of the state-shifting levers, corresponding .with the ditierent positions to which the controller-handle may be moved to bring the index 220 (Fig. 8) into registry with different groups of symbols in the scale 223, the vertical rows of letters on the diagram, Fig. 11, corresponding with the radial rows on the diagram, Fig. 8. y

llt may be noted that the form of. the guiding groove (Fig. 11) in each cam disk is such that on rotation of the state-setting device, the pin on the state-shifting lever will be moved from `one to another of three different positions, an uppermost position, in which it will set its corresponding computing head for subtraction; a lowermost position, in which said computing head will ','be set for addition; and an intermediate position, in which saidhead. will be set to 'c maar?? remainneutral. rlthe forms of the guiding grooves on the three cam disks are varied, one with respect to the other, in accordance with the arrangement of the symbols in the scale 223, and in the same order, so that, on movement of the controller-arm, such as to bring the index-pointer 220 into registry with one of the radial groups of symbols, representing a particular permutation of states, the state-setting device will be so moved as to bring into settingrelation with the pins 209 to 211 of the stateshifting levers, those portions ot the `three guiding grooves represented by the corresponding vertical row ot symbols on the diagram, Fig. 11, so as to set said computing heads in accordance with the particular permutation indicated on the scale. By moving the controller-handle to any particular permutation, as designated in the scale 223, therefore, the three computing heads may be correspondingly set.

As a means for holding thestate-setting device, and parts controlled thereby, in any of the various positions to which they may be set, the driving sector 2141 is` provided with an arcuate series of notches 224, there being one such notch corresponding to leach position of the index 220 with respect to the scale 223, and a detent 225, which ma Y be mounted upon the under side oit' the tiaceplate 213, is held in yielding engagement with one of the notches 224.- ot' saidv sector by means of a spring 226.

As a means yof indictaing, to an operative, predetermined states to which it may be desired that the computing heads shall be set, whenever the carriage travels into a computing zone, a permutation-state-indicating device is provided, which will now be described. Mounted for rotation about the hub 215 of the state-setting mechanism. and behind the dial-plate 213, are three indicator-elements, in the form of sectors, 240, 241, 242, (Figs, 3,4, 5 and 7), corresponding, respectively. with the computing heads 59, 60 and 61. Each of these indicator-elements is provided with an upstanding scale-'bearing element, said elements being designated, respectively, by the reference characters 243, 244 and 245 (Figs. 3 and 4). s These scale-bearing elements are normally located behind the dial-plate 213, and close to `an index-opening 246 in said dial-plate, and are positioned at diti'erent radial distances from the center about which the sectors ,rotates,. so as to move in adjacent circular paths when the indicatorsectors are rotated. Eachot. said scalebearing. elements is provided with an indicator-scale comprising three symbols or letters,.S, N and' A,. indicative of the three states to which its corresponding computing head may be set. By moving the indicator-sectors to diterent relative positions with respect to the index-,opening 246, and thus exposing different ones of the aforesaid symbols at said index-opening, the indicator may be caused to register all the dierent permutations of states to which the computing heads may be set, said permutations being represented by the symbois carried by the scale-bearing elements as read in a radial direction through said index-opening.

Means may be provided for justifying or alining each of the indicator-sectors in any one of its three indicating positions. For such purpose each sector is provided with three notches 247, one for each indicating position, and a common justifying detent member 248, mounted to the rear face of the bracket 182, (Figs. 3 and 4) and projecting forwardly through an opening therein and through openings 250 in said sectors, is provided with a spring 249 for moving said detent into said notches for accurately positioning said indicator-sectors at each operation. The sector 242 is provided with an openinglthrough which project the scalebearing-elements 243 and 24.4 of the indif-l cator-elements -240 and 241, andthe sector 241 is in like manner provided with an opening through which projectsthe scalebearing element 243 of the indicato'r-element 240, said openings being of sufficient extent' to permit free movement of said sectors to their various positions. To permit free relative movement of the sectors 24() 241 and 242, with respect to the hub 215, and to rcduce the tendency which each member would have to impart a rotation to the other, said members are separated by washers 251. A stop-pin 252 is mounted upon the bracket 205 (Figs. 3 and 4) in a position to be engaged by lugs of the sector-plates 240, 241, 242, when returned to their normal positions.

As a means of indexing, in accordance with predetermined permutations, the states to which it is desired that the computing heads shall beset, and of moving the indicator-sectors to relative positions corresponding with such predetermined states, the following mechanism is employed. Rotatably mounted within brackets 253, 254. (Figs. 5 and 7) is a hollow shaft 255, within which is rotatably mounted a hollow shaft 256, which, in turn, serves as a mounting for a third rotatable shaft 257. Collars 288, 289, fixedly attached to said shaft 255, as by set-screws 290, 291, prevent end wise movement thereof. Said shafts 255, 256, 257.are provided at one end with radial arms 258, 259, 269, respectively, one foreach shaft, said arms being connected b v suitable pin-and-slot connections261 (Fig. 3) with rock arms carried b v the respective indicator-sectors 240v` 241. 242. At their opposite ends, said shafts'255, 256, 257 are provided, respectively, with radially-projecting arms 262, 263, 264, connected, respectively, by links 265, 266, 267 to vertically-depending arms of three bell-cranklevers 268, 269, 270. The vertical arms of said bell-crank-levers 268, 269, 270 are connected by links 271, 272, 273 to vertical arms of three bell-crank-levers 274, 275, 276, the two sets of bell-cranks being mounted for rotation about parallel axes. the horizontal arms, carried by each of the three pairs of bell-crank-levers 268, 274; 269, 275; 270, 276, are three saddle-shaped links 277, 278, 279, each of which constitutes a cam member for operating a corresponding indicator-sector. It will b'e apparent that, on depression of the cam member 277, motion will be transmitted, through the intermediary of the bell-cranks 268, 274, links 271, 265, arm 262, rock-shaft 255, and arm 258, to the indicator-sector 240, which will be rocked an amount depending upon the extent of vertical movement which is` imparted to the cam member 277. In like manner a vertical movement of either of the cam members 278, 279 will result in a corresponding rocking movement of its connected indicator-sector 241 or 242. It will also be apparent that-if means is provided for imparting the proper degree of vertical movement to the cam members 277, v.278,

279, when the carriage enters a computing zone, the indicator-sectors, carryingthe scale-bearing members' 243, 244, 245, may .be caused to register at the index 246 any desired permutation of states to which the computing heads should be set for that zone. In order to accomplish the aboveindicated result, the cam members 277, 278, 279 are located side by side in position to be engaged by parts constituting operating surfaces or tappets, which may be carried by the typewriter carriage and caused to engage said cam members when the carriage enters a computing zone. yThese tappets may be attachable at various adjustable positions with respect to the carriage, for the purpose of pre'determining the relative positions of the zones in which they will be effective, and the length of the cam members 277 to 279 will determine the width or extent of said zones, which will usually be equal to the length of a computing zone.

In the present embodiment of the invention, the tappets for operating the respective cam members 277, 278, 279, are provided by adding to the tabulator-columnstops 39 the projecting operating surfaces 280, 281, 282 (Figs. 1 and 5), although it is to be understood that separate tappet-carrying jlates might be used for such purpose. he extent to which each of the operating surfaces 280, 281, 282 projects downwardlv from the column-stop determines in each instance the extent of rotation of the.

Connecting 75 corresponding indicator-sector, as a result of which the surface having the greatest eX- tension will move its sector-plate to register the symbol en (see diagram, Fig. 8), Whereas the surface ot least extension will cause its sector-plate to register the symbol Si. rllhe surface having the extension of intermediate degree will cause its corresponding sector-plate to register the symbol N llt will now be understood that by providing different tabulator-column-stops with operating surfaces or tappets differing from each other in their relative positions, as by cutting different stops along the broken lines indicated in the diagram shown in Fig. 10 each being cut along a different path, a. set of stops may be produced, hav- 'ing the tappets or operating surfaces projecting therefrom in accordance ivithiall the various permutations of states to which the computing heads may be set. Such variously-shaped stops will therefore serve as a set of indexes, and, by the selection and proper placing ot any particular one oi said indexes upon the tabulator-bar 12, any desired permutation of states may be registered on the indicator when the carriage enters the zone determined by the placing ci" said index.

is a means of returning the indicator sectors 240, 241, 242 to their normal positions against the determining stop 252, when the tappets 280, 281, 282 release the cam members 277, 27 8, 279, springs 284-., 285, 286 are provided, one end of each spring being connected to the vertical arm of one of the bell-cranks 268, 269, 270, respectively, and the other end to a pin 283, secured to the machine frame. rllhe relative strength of said sprinr'rs, with respect to that ot the spring 249 (hig. e) ot the indicator justifying-detent 2-18, is sutiicient to force said detent out oi' engagement with the notches 247, and return'the indicator-sectors to their normal positions.

The mechanism may include means for locking the numeral keys when the typewriter carriage travels into a computing zone. For this purpose, use may be made of the ordinary line-lock, such as is fully disclosed in the patent to Pfunder t Cook No. 853,562,.issued May 14, 1907. Only such parts ot' the line-lock of said patent will be described herein as are necessary to make clear its adaptation to the present invention. Each of the numeral keys 20 is provided With a lockinfr element in the form of a hook 300 (Fig. 5 locking bail 301, carried by `radial arms 302, 303, lixedly attached to a rock-shaft 304, is mounted to rotate in bearingscarried by the machine frame. When the 'typewriter carriage 25 reaches the end of a line, a cam 305 (see Fig. 7), carried thereby, engages a cam 306 aai-laire on an arm 307 carried by a rock-shaft 308 for rocking an arm 309, the end of `which is caused to engage an arm 310 (see Fig. 5) to rock the shaft 30e, and thus throw the locking bailfrom its normal position, as shown in Fig-5, to a position under the locking elements 300 to lock the numeral keys.

rthe locking bail 301 may be normally held in its unlocked position, with the arm 303 in engagement With a stop 311, by a spring 312, which connects the arm 310 with a pin 313 secured to the machine frame.

To provide for throwing the bail 301 to its locking position with respect to the numeral keys Whenever the .Y carriage enters a computing zone, there is provided a rocker 31d (Fig. 5), pivoted at 315 and having at one end a bar 310, so positioned as to be engaged by the horizontal arms of the bellcranks 268, 239, 270, and moved thereby at each operation of said bell-cranks, when their connected 4cam members 277, 273, 279, are engaged and moved by the tappets 280, 281, 282. The other end of the rocker 31e is connected by means of a link 31'? With a cam 313 pivoted by means of a pin 319 to a bracket 320 secured to the machine frame. it locking bar 321 is provided at its rear end with a slot 322 to form a sliding connection `with the pin 310, `and at its front end with a guide 360 to-'prevent sideivise movement thereof, but to permit movement in a vertical plane. The locking bar 321 is therefore free to slide as Well as rotate with respect to said pin 319. rllhe front end of said locking bar is in the form of a twopronged fork, one prong 323 being provided with a shoulder 321inormally resting against the lockin bail 301 when said parts are in normal un ocked position, as shown in Fig. 5, and an extension 325 normally resting upon said bail and serving as a means to support the front end of said locking bar. rlhe other prong 326 is provided with a cam surface 327 and an extension 328 normally resting upon one end of a lockreleasing lever 32S) pivoted at 337 to a bracket 338 secured to the machine frame. rl`he operation of this lever and its associated parts will hereinafter be described.

To maintain the cam 318 and parts connected therewith, in their normal positions and to return them thereto after each operation, one end of the rocker 3111 is connected by means of a spring 330 (see Fig. 9) with the pin 283 secured to the machine frame. A spring 332 (Fig. 5)., secured at one end to Vsaid locking bar 321, and at the other end to a pin 333, carried by the machine frame, is also provided fornormally tending to rotate the locking barA 321 in a counterclockwise direct-ion, as shown in Fig. 7, to maintain the engagement of the extension of the tappets 280, 281, 282, with its corresponding cam member 277, 273', 279, the locking bar 321 will be moved forwardly to such an extent that the shoulder 324 Will move the bail 301 to its locking position under the members 300 of the numeral keys. The effect of this mechanism is such that, whenever the carriage moves into a computing Zone, as determined by the placing of one of the column-stops 39, bearing ta pets 230, 231, 282, the numeral keys will e docked, and unless released fromlsaid lock by means to be hereinafter described, said keys will remain locked until the cam members 277, 278, 279 are released from their engagement with said tappets.

As a means -for returning the numeralkey-locking device to its ineffective position to unlock said keys, the lever 329 is provided with a cam surface 336, which, on sufficient rotation of such lever, may engage the cam surface 327 on the locking bar 321 and lift the forward end of said locking bar to release the bail 301 from the shoulder 324, and thus permit the same to be moved, under the infiuence of the spring 312, to its 1 normal position, clear of the locking elements 300, in which position the bottom of the bar321 rests upon the bail 301. The lever 329 is normally held in the position shown in Fig. 5, against the stop-pin 345 with' its cam 336 slightly separated from the cam 327 on the -locking bar by means of a spring 339 secured at one end to said lever and at the other end to any suitable part of the machine Jframe. The end of said lockreleasing lever 329 'opposite to that, which bears the cam 336 is provided with a head 34() resting within a groove 341, between two coliars 342, 343, secured to the bar 222 in any appropriate manner, as by set-screws y 344. A helical spring 346 (Fig. 4), sul'- rounding said bar, and confined between one end of the hub 315 `of the state-setting device, and a collar 347, secured to said bar in any suitable manner, as by inset-screw 343, normally holds said bar 222 1n its innermost position, as indicated in Fig.-7, with the connected controller-handle 212 removed from the dial 213. The groove 341 is longer than the width of the head 340, so that on first movement of the controller-handle toward the dial 213, the lock-releasing lever 329 is not moved and will not result in a release of the numeral keys from the locking mechanism. lt is only by a complete endivise movement of the controller-handle 212 that the shoulder formed by acollar 343 engages the head 340 to move the lever 329,

radially-disposed slots 349 arranged in thel arc of a circle about the center of the axis of the controller-handle 212. These slots, as shown in Figs. 2 and 5, and in the diagram, Fig. 3, are in radial alinement with the symbols of the scale 223 for indicating different positions of the state-setting device, there being one such slot for each radially-disposed set of symbols. On the back of the controller-handle 212, and at a radial distance from its axis corresponding With that of the slot 349,. is a rectangular lug 350 of size and shape such as to permit the same to enter one of said slots When the operating handle 212 is moved toward the disk 213. On rotation of the operating handle to the proper position, the lu may .be brought into register With 'any esired one of said slots. Carried by each of the respective indicator-sectors 240, 241, 242, is a series of lockout elements. These lock-out elements are located at the periphery of the indicatorsectors just beneath the slots in the dial 213,

and serve, by engagement with the lug 350 on the back of the controller-handle 212, to

prevent the full movement of said con` troller-handle in its movement toward the disk, except when said handle is moved to bring its index 220 into registry With the radia roup of symbols in the scale 223 correspon ing With the permutation of states which may be lregistered at the time by said indicator-sectors at the index 246. To provide the lock-out elements, for the abovedescribed purpose, each of said indicatorsectors is turned up at its periphery to form an arc-,shaped flange, the three flanges, designated 351, 352, 353 (see Fig. 4)being located at radial distances from the axis ofthe controller-handle 212 such that they will move in neighboring arcuate paths under the slots 349. Each of said flanges 351, 352, 353. is cut away, as indicated diagrammatically in Fig. 8, to form recesses 354. 355, 356 separating lock-out elements 357, 358, 359. The respective lock-out elements on each indicator-sector are so positioned with respect to each other, and with respect to the slots 349 in the dial plate, and with respect to the placing of' the symbols S, N and A relatively to the indexat least one locking element 357, 358 or 359,

under each of the slots 3119, except that corresponding vvith the symbols of the scale 2,23 representing the same permutation of states.

1t Will therefore be necessary, when the state-indicator has been so set, to move the controller-handle 212 about its horizontal a-Xis until the index 220 registers with the symbols of the scale 223 corresponding with said permutation of states, at which point only it will be possible to move said handle to its full extent in its direction toward the dial 213 to cause the numeral keys to be released by the key-locking mechanism. At this particular point three of the recesses 354C, 355 and 356 will be in alinement under the particular slot which the lug 350 Will enter when the controllerhandle is depressed.

1t vvill be noted that the relative positions of the indicator-sectors 240, 2111, 212, with respect to each other, is the same for permu- CC S 77 C6 S 79 CS S, CG N 77 it 77 t( N 77 and. A A 111. Some special provision must therefore be made in arranging the lock-out elements to differentiate these different positions. T his has been effected by placing the C Si 77 L( S ,7 $6 S 7? A ik A at the ends of'the scale, so that when the indicator-sectors are positioned to represent one ofthese groups of symbols, the three alined recesses which correspond with the permutation representing the other will be beyond the slot 349 and at the opposite end. Likewise, the symbols representing N N N, and the slot 349 correspending thereto, have been vplaced at a distance removed from` the others, so that the three recesses corresponding With said 4symbolsvvill always'be covered by a part of the dial plate, except vvhen the three indicator-sectors have been moved to register ythe permutation N N N at the index-opening 2116.

llt may be desirable, at times, to type- Write on the Work-piece, and Within the computing zones, subject-matter including numbers which are not to be computed. At such times it is unnecessary that the computing mechanism should be operated when the numeral keys are depressed. Means may therefore be provided for disconnecting the numeral keys from the computing mecha- .nism Whenever it is desired to type-write under such conditions. For such purpose 4use may be made of key disconnecting mechanism such as that disclosed in the atent to )Walter Wright, No. 1,160,102 of ovember 9, 1915. A; bar 361 (see Fig. 12) is provided, havin openings 362 therein through which pass t e connecting links 118, which mediar couple the levers 21, of the numeral keys 20, with the computing mechanism. The bar 361, as herein disclosed, corresponds With the bar 11 controlled by the lever 1T", and keys 18 and 19 (see Fig. 1) of the aforesaid patent, and may be controlled by a similar lever 366 and keys 367, 368 for reciprocating the same. lf the bar 361 is moved to the left, as viewed from the front of the machine, the hooks 14:9 of the links 1418 Will be disengaged from the openings 150 in the levers 21, and the numeral. keys Will be disconnected from the computing mechanism. 1f the bar 361 is moved to the right the connection Will be restored. This part of the mechanism is fully described in the aforesaid Patent, No. 1,160,102, and need not, therefore, beset forth with greater particularity here, except to note that in the patent', to which reference is made, the bar 11 must be moved from the front of the machine, to disconnect the numeral keys, and 'to the left to connect them, instead of as above described.

1n order that subject-matter including numbers which are not to be computed may be typewritten, when desired, in the computing Zones, Without disturbing the adjustment ofthe column-stops bearingthe tappets which control the operating mechanism of the key-locking device, means may be provided for rendering said operating mechanism ineffective at such times.' For this purpose. the key-disconnecting bar 361 (Fig. 5) is provided with an arm 363 having thereon a cam surface 3611 to engage the under side of the locking bar 321 and lift the same 'on movement of said key-disconnecting bar tovvard the left from the position shown in Fig. 5. Whenever, therefore,'the key-disconnecting bar 361 is moved to the yleft to disconnect the numeral keys from the computing mechanism, the cam 364 will lift the front end of the locking bar to a position such that the shoulder 324 Will be ineffective to operate the key-locking device. ldhen' the disconnecting bar 361 is shifted to the,

right to connect the numeral keys with the computing mechanism, the key-locking device vvill again be renderedsubject to control by the locking bar 321 and its operating mechanism.

ii s

rlihe operation of the device, as a whole, i

should be apparent from the foregoing description of its parts, and need only be summarized. lllhen it is desired thatthe various heads of the computing mechanism should be set to add, subtract, or remain neutral in accordance with various permutations of such states for different computing zones, but always in accordance With the same permutation for the same zone, the operative Will select, from a set of columnstops 39, having tappets 280, 281, 282 thereon, variously positioned, a stop `for each of saidzones, having tappets corresponding, in their relative arrangement, with the desired permutation of states for said zone. These stops will be placed upon the tabulator bar in positions which will determine positions as to register the selected permutation of states for said Zone at the indexopening 246. The same operation of said cam members 277, 27 8, 279, andthe mechai nism controlled thereby, will be effective to lock the numeral keys. The operative will then rotate the controller-handle 212 until the index 220 registers with that group, of the symbols in the scale 223, corresponding with the particular permutation exhibited at the index-opening 246, thereby causing the state-setting device to set the computing heads in accordance with the same permutation of states. will then be pushed -inwardly toward the dial plate to cause the lock releasing mechanism to render the key-locking device ineffective, after which the numeral keys may be operated to ,enter the desired number. Should an attempt be made to operate the lock-releasing mechanism without first operating the state-setting device to properly set the computing heads, movement of the controller-handle would. be prevented by engagement of the lug 350 with one or more of the lock-out elements 357,358, 359.

It may, at times, be desired to have the computing heads set in accordance with the same permutation of states for computing in two or more successive computing zones. In such case, the operative will select and set a column-stop, having tappets thereon corresponding with said permutation, for operating the various parts of the mechanism in the above-described manner for the first of said zones. It is, however, unnecessary that a similar stop should be used for the following zones. in which no change is to be made in the settingof the computing heads. For use in such cases, there may be provided column-stops 365 (Fig. 5), .each having thereon a tappet G3- to coperate with the latch 64 that controls the movements of the master wheel, but having no projecting portions corresponding,r to the tappets 280, 281, 282 of the stops 39. This stop 365 will` therefore, latch 64 to determine a computing zone, and, with the decimal stops 38, to serve its purpose as a column-stop,y but will ride clear of the cam members 277, 278,' 279, without The controller-handle 212r cooperate with the` moving them. When,- therefore, the carriage enters a computing zone, as determined by one of the stops 365, the mechanism, which controls the movement of the locking bar 321, will not be effective and the numeral keys will therefore not be locked. The numeral keys may, therefore, be immediately operated to enter the number in said zone without any previous movement of the controller-handle of the state-setting and lock-releasing devices.

As shown in the diagram, Fig. 5,'the stop nearest the operating mechanism is provided with tappets to register on the stateindicator the permutation A, N, S; the next stop is of such form as to register on said indicator the permutation S, 5, S; and the third is such as to pass clear of the cam members 277, 278, 279, without moving the same.

Then subject-matter, including numbers which are not to be computed, is to be typewritten across parts of the work-piece selected as computing zones, by the setting of the column-stops, but without disturbing the setting of said stops, the operative will throw the key-disconnecting bar 361 to the left, thus disconnecting the numeral keys from the computing mechanism, and at the l same time rendering the operating mechanism for the key-locking device ineffective. On throwing said key-disconnecting bar 'to the right, the computing mechanism will again be thrown into action and the keys will be locked whenever the carriage enters a computing zone.

It is not necessary that the column-stops 39 should be used as carriers for the computing-zone-determining tappets 63, or for the tappets 280, 281,282, ofthe indicator and lock-operating mechanism. Each setof tappets might be carried by a separate setof stops and the carriage might be provided with a separate notched bar for receiving each set. The form in which the invention is herein disclosed, however, in which a single set of stops is provided to' carry all the tappets, is simple and con-l venient in operation. By so arranging the tappets it is necessary to select and set but one stop for each computing zone which will serve as a means for determining the position of said zone, for bringing the car-k riage `to restat a particular part of said zone, as determined by the particular tabulator key operated, .for locking the numeral keys in said zone, and for setting the permutation state-indicator to vregister the particularv permutation of -state's to which the computing heads must be set before the 'locking device can be rendered ineffective, so as to unlock said numeral' keys. It should be noted thatl in order to accomplish the aforesaid results with-operating surfaces or tappets carried on a single set ot stops, it will be necessary to so position the latch 64, relatively to the decimal stops 38, that When a column-stop 39 is brought up against the decimal stop of highest denominational order, the master Wheel Will be so positioned, with respect to the computing wheels of the totalizer mechanism, that on operation of a numeral key., the

. number typeivritten thereby will be entered into the computing Wheel of highest denominational order. lt is also essential that the cam members 277, 278, 279, shall be so positioned relatively' tosaid decimal stops that when the column stop is -brought to rest against the decimal stop of highest denominational order, the tappets 280, 281, 282, Will engage and move said cam members to effect the locking of the numeral keys and the setting of the state-indicator. 'lhe cam members 277 278, 279, should also be of such length as to maintain coperative relation with the tappets on the column-stop throughout the entire Width of n the computing zone.

Variations may be resorted to `within the scope of the invention., and portions ot the improvements may be used Without others.

Having thus described my invention, ll claim:

l. ln a computing machine, kthe combination with computing mechanism including a computing head settable to diilerent states, numeral keys therefor, and a traveling carriage, ot means controlled by the travel of said carriage into a predetermined zone for lookin said keys, means controlled b the travel o said carriage into said zone` for indicating to the operative a predetermined state to which said .computing head may be set, means tor setting said head to a corresponding state, means for releasing said key-locking means, and means dependent upon the relative positions of said statesetting and state-indicating means, to prevent the actuation ot said releasing means except vvhen said compi'iting 'head 1s set to the state so indicated.

2. lin a computing machine, the combination with computing mechanism including a computing head settable to different states, numeral keys therefor, and a traveling carriage, ot means controlled by the travel ot said carriage into a. predetermined zone for locking said keys, a state indicator bearing designations indicative ot a plurality ot states to which said computing head may be set, an index therefor, means controlled by the travel o t-said carriage into said zone for effecting relative movement between said indicator and its index to register a predetermined one of said states, meanstor 'setting said head to a correspondingstate,means tor releasing said key-locking means, and means dependent upon the relative positions et said statesetting and state-indicating means', to prevent the actuation ot said releasing means except when said computing head is set to the state so indicated. f

3. ln a computing machine, the combination with computing mechanism including a computing head settable to diderent states, numeral keys therefor, andl atraveling carriage, of means controlled by the travel of said carriage into any one ot a number ot predetermined zones for locking said keys, means controlled by the travel of said carriage into any one of said zones for indicating to the operative a predetermined state to which said computing head may be set for said Zone, means tor setting said head to a setting and state-indicating means, to pre-v vent the actuation ot said releasing means when said carriage is in any one ot said zones, except when said computing head is set to the predetermined-state for said zone.

4:. ln a computing machine, the combination with computing mechanism including a plurality ot computing heads variably settable to different states, numeral keys therefor, and a traveling carriage, ot means controlled bythe travel ot said carriage into a predetermined zone tor locking said keys, means controlled by the travel of said carriage into said zone for indicating to the operative for each of said computing heads a predetermined state to which it 'may be set tor said Zone, means'tor setting said heads to corresponding relative states, means tor releasing said'key-locking means, and means` dependent upon the relative positions of said state-setting and state-indicating means, to prevent the actuation ot said releasing means, except when said computing heads are all set to thestates so indicated.

which it may be set for said zone, means tor" setting said heads to corresponding relative states, means :tor releasing said key-'locking means, and means dependent upon the relative positions of said state-setting and state-indicating means, to prevent the actuation ot said releasing means, when said carriage is in any one ot said zones, except when said computing heads have all been set to the predetermined states for said zone as indicated.

.ln a computing machine, the combination with computing mechanism including a computing head settable to different states, numeral keys therefor` and a traveling carriage, ot a locking device for said keys, a state-indicating device, operating mechanisnnincluding a part carriedl by said carriage and a part to be engaged thereby on travel of said carriage into a predetermined zone for rendering said locking device elective and tor causing'- said state-indicating device' to register a predetermined state to which said computing head may7 be set, means for setting said head to the state so registered, releasing mechanism for said locking device, and means dependent upon the vrelative positionsl of said state-setting and state-indicating means t'or preventing the actuation of said releasing mechanism except when said computing head is set' to said predetermined state.

'i'. ln a computing machine. the combination with computing' mechanism including a computing head settable to diierent states, numeral keys therefor. and a traveling carriage, of a locking device i'or said keys` a state-indicating device, operating mechanism, including a part carried by said carriage and a part tc be engaged thereby on travel ot said carriage into a predetermined zone, for rendering said locking device eifiective and tor causing said state-indicating device to register a predetermined state to which said computing head may be set, one ot' said engaging parts of said operating mechanism being adjustable to various positions tor variably predetermining said Zone, means for setting said head to the state so registered. releasing mechanism tor said locking device. and means dependent upon the relative positions of said state-setting and state-indicating means t'or preventing the actuation oi said releasing mechanism except when said computing head is set vto said predetermined state.

ln a computing' machine` the combination with computing` mechanism including a computing head settable to dii'llerent states, numeral lteys therefor, and a traveling carriage. ot a locking device for said keys, a state-indicating device, operating mechanism-` including a part carried by said carriage and a part to be engaged 'thereby on travel ot said carriage into a predetermined zone, for rendering said locking device etfective and ior causincv said state-indicating device to register a predetermined state to which said computing head may be set, one ot' said engaging parts of said operating mechanism being a member of an interc-,liangeable set having their engaging sui'- 'aces differentiated in accordance with dii?- ferent states to bc indicated, so that by a selection of a particular member of said set the state to be registered on said indicator may be predetermined, releasing mechanism for said locking device` and means dependent upon the relativi` positions ot said statesetting and state-indicating means for preventing the actuation of said releasing mechanism except when said computing head is set to said predetermineil state.

9. ln a computing machine` the combination with computing mechanism including a computing head settable to different states, numeral keys therefor, and a traveling carriage, of a locking device for said keys, a state-imlicating device, operating mechanism, including a part carried by said carriage and a part to be engaged thereby on travel of said carriage into a predetermined zone, for rendering said locking device effective and for causing said state-indicating device to register a inedetermined state to which said computing head may be set, one of' said engaging parts of said operating mechanism being a, member ofan interchangeable set having their engaging surfaces diilerentiated in accordance with ditferent states to be indicated, so that by a selection of a particular member of said set the state to be registered on said indicator may be predetermined, said member being adjustable to different positions to predeterminc said zone. releasing mechanism for said locking device, and means dependent upon the relative positions ot said statesetting and state-indicating means for preventing the actuation of said releasing mechanism except when saidI computing head is set to said predetermined state.

l0. ln a computing machine, the combination with computing mechanism including a plu ality of computing heads variably set-` table to dilierent states, numeral keys therefor, and a traveling carriage. oia locking device for said keys, a s'tate-indicating device comprising a plurality of members, one for each computing head, each movable to positions indicative of the states to which a corresponding head may be set. operating mechanism for said indicating device comprising for each member thereof a part carried by said carriage and a part to be engaged thereby on travel of said carriage into a predetermined zone tor simultaneously causing the members of said indicatingdevice to register predetermined stat-es to which said computing heads may be set. one set of said engaging parts ot said operating mechanism being carried by a single member constituting one oi an interchange.- able setot indexes, the members of said set having their engaging surfaces variously positioned in accordance with diliierent Dermutations ot states to be indicated, so that -trolled bythe travel of said carriage for rendering said locking device eilective when said carriage enters said zone, a state-setting device for said computing heads movable to various positions to set said heads in accordance with different permutations of states which may be indexed on said indicator operatin mechanism, releasing mechanism for said lockin device, and means depending upon setting and state-indicating means for preventing the actuation of said releasing mechanism except when said state-setting device has been moved to the position which is elective to set said heads in accordance With the particular permutations of states registered bythe various members of said indicating device. v

11. In a computing machine, the combination with computing mechanism including a plurality of computing heads, each settable to a plurality oiE diferent states, numeral keys therefor, and a traveling carriage, of means controlled by the travel of said carria-ge into a predetermined zone for locking said keys, means forreleasing said key-locking means, a permutation state-setting device movable to different positions to set said heads irfaccordance with different permutations of states, a permutation state-indicating device comprising a separate element for each computing head, each element bearing designations corresponding to the dili'erent states to which said heads may be set, an index therefor, means controlled by the travel of said carriage into Said `zone for causing relative movement between said indicator elements and said index to register a predemined permutation of states for said heads for said zone, and a permutation lock-out mechanism for said key-lock releasing means comprising a plurality of series of lock-out elements,-one series for each indicator element, each series being controlled in its movement in accordance with the movement of the corresponding indicator element,said lock-out elements being so disposed relatively to each other that one or more of said elements will obstruct the operation of said key-lock releasing 'means except when said state-setting device is in position to set said heads in accordance with the permutation of Y states registered by said indicator.

12. 1n a combined typewriting and computing machine, the combination. with a typewriter including number printing mechanism, keys therefor, and a traveling carriage, computing mechanism controlled by said keys and includinga computing head settable to different states, and means for predetermininga computing'zone, of means the re ative positions of said statemaar?? controlled by the travel of said carriage into said zone forlocking said keys, means controlled by the travel of said carriage into said zone for indicating to the operative a predetermined state to which said computing head may be set, means for setting saidl zones, of means controlled by the travel oi' said carriage into any oneoi' said zones for lockingsaid keys, means controlled by the travel of said carriage into any one of said zones for indicating to the operative a predetermined state to which said computing head may be set `for said'zone, means for setting said head to a corresponding state, means for releasing said key-locking means, andy means dependent upon the relative positions of said state-setting and'y state-.indicating means to prevent the actuation of said releasing means when said carriage is in any. one of said zones except when said computing head is set to a predetermined state for said zone. y

14. ln a. combined typewriting and computing machine, the combination with a typewriter including number-printing mechanism, keys therefor, and a traveling carriage, computing mechanism controlled by said keys and including a plurality of computing heads variably settable to different states, and means for predetermining a computing zone, of means controlled by the travel of said carriage into said zone for locking said keys, means controlled by the travel of said carriage into said zone for indicating to the operative for each of said computing heads a predetermined state to which it may be set for said zone, means for setting said heads to corresponding relative states, means 'for releasing 'said key-locking means, and means dependent upon the relative positions of said state-setting and stateindicating means to prevent the actuation of said releasing means except when said computing heads are all set to the states so indicated.

15. ln a combined typewriting and vcomputing machine, the combination with a typewriter including number-printing mechanism,v keys therefor, and a traveling carriage, computmg mechanism` controlled 

